Manual

3
4890AS–GPS–09/05
ATR0621 [Preliminary]
Figure 1-1. Block Diagram
Embedded
ICE
Interface to
Off-Chip
Memory
(EBI)
SRAM
128K
ROM
384K
B R
I
D
G
E
JTAG
ASB
PDC2
USB USART1 USART2 SPI
PIO2
Controller
Watchdog
Special
Function
Reset
Con-
troller
Advanced
Power
Manage-
ment
Controller
SDM
Generator
GPS
Accelerator
GPS
Correlators
PIO2
PIO2
ARM7TDMI
APB
Advanced
Interrupt
Controller
SRAM
RTC
NSLEEP
NSHDN
XT_IN
NRESET
TMS
TCK
TDO
TDI
NTRST
DBG_EN
EM_DA0
EM_DA15
EM_A1
EM_A19
CLK23
RF_ON
P0/NANTSHORT
P15/ANTON
P31/RXD1
P18/TXD1
P22/RXD2
P21/TXD2
P2/BOOT_MODE
P3/nCS1
P4/nCS0
P5/NWE/NWR0
P6/NOE/NRD
P11/EM_A21
P10/EM_A0/NLB
P16/NEEPROM
P8/STATUSLED
P28/EM_A20
P30/AGCOUT0
P7/NUB/NWR1
Power
Supply
Manager
LDO_EN
LDO_IN
LDO_OUT
LDOBAT_IN
VBAT
P1/GPSMODE0
P12/GPSMODE2
P13/GPSMODE3
P17/GPSMODE5
P23/GPSMODE7
P24/GPSMODE8
P26/GPSMODE10
P27/GPSMODE11
P29/GPSMODE12
P19/GPSMODE6
P25/NAADET0
P14/NAADET1
P9/EXTINT0
SIGHI0
SIGLO0
VBAT18
XT_OUT
P20/TIMEPULSE
USB
Transceiver
USB_DM
USB_DP
Timer
Counter